This idea started out as a drawing I put on deviantart. What if our lovable cinnamon roll Deku was the son of the god-like figure of another cinnamon roll franchise 'Steven Universe'? So here is 'Diamond Deku'.

Even though this is a xover, it has so little Steven Universe interference and characters that I'm placing it on the MHA archive. Also, this is more for MHA readers. Any concept of Steven Universe-verse is explained for MHA fans.

This is just an experiment and honestly, it was writing in a bit of haste. Take it as a pilot of a series. And below is a link for my drawing. Just delete the spaces.

deviant art orichalcosdark / art / Deku-son-of-White-Diamond-795282646

Italic text - Izuku narrating.

"Italic" - thoughts.

Life is full of surprises. Many people say so. But I bet those people don't expect some outlandish revelation that their mother is an alien ex-queen.

Okay, maybe that wasn't the best way to start things up. That came out a little weird...

Better to start from the beginning.

Like anyone else, I have no memories of my earlier years. I spent the first three years of my life in an orphanage. Records say my parents were killed in a villain attack. I barely recollect my time in the orphanage. Only that it wasn't good.

Quirk. A mutation that gifts a person a single, unique ability. Like a power brought out of comic books. Nowadays, 80% of the population has a quirk. They first manifest at about the age of 4. I, on the other hand…

I've had this white diamond embedded in my forehead since I was born.

In the orphanage, I recall the other kids shunned me because of my anomaly. Honestly, someone having a rock stuck to their skull isn't the weirdest thing you see. There are way more fantastical quirks. But those don't show up when you're still a toddler.

Good thing is, those times didn't last. One day, a green-haired lady came and adopted me. Since that day, Inko Mydoriya is the only mom I know, and care to know.

So that's my prologue. Born with a deformity, orphan as a baby, adopted by a kindly woman.

When I was five, my mom took me to a doctor. Because my 'quirk' was...strange to say the least. More accurately, I did strange things: my diamond could glow and I could make tiny white bubbles. I was thrilled back then, thinking I had finally gotten my quirk.

The doctor said different. "Your son is quirkless."

"Uh?"

"But, Dr. Tsubasa, he has a diamond on his head." Inko pointed at the precious stone

The doctor said DNA analysis and x-rays to my feet indicated an indisputable fact: I am quirkless. As for why I'm so abnormal…

"According to the record from your orphanage, you were born with that diamond embedded in your frontal bone. It's just as a part of your body as your skull." the doctor explained patiently while showcasing an x-ray of the boy's skull. The frontal bone of the skull had a diamond shaped hole. Fun fact, diamonds usually don't show up on an x-ray. "Yet, the DNA analysis show no quirk factor, whatsoever. So this 'mutation' is not the result of a quirk. It's no different than a bone deformity one can be born with."

"So his diamond is not part of his quirk?" Mom was just as confused as me.

"So it would appear." the doctor nodded like it was completely natural. "Please, understand this is very rare, but not unheard of. There have been scarce reports of people, both quirkies and quirkless, with deformities that show no quirk or nothing related to their existing quirks."

I remember my mom putting a hand on my shoulder. She squeezed me hard, like she was afraid I'd disappear. At the time, I didn't understand why.

"And what are you going to do?"

The doctor eyed her for a moment. "Nothing. These anomalies are rare, but from the reports I have, there's never been a case where it harmed the patient's health. Though I advise you allow me to monitor development for the next few months. This won't be made public, if you don't wish it so."

"So, I don't have powers?" if I described today how I felt at that moment, I'd say it was like I was walking on a fine line above an abyss. "But I can make this. See!" I made a white bubble out of thin hair in between my hands. The doctor gave it a dispassionate look and scratched his beard.

"You do have powers, but they are not a quirk. More likely they are a mutation, caused by your deformity." he tapped the diamond, making me flinch away. I didn't like that man's touch on my gem.

"So if I have powers, I can be a hero, right?" at that moment, I didn't care if for some reason I had no quirk. If I have powers, then I could be a hero like All Might! He made everything better with a smile on his face. I wanted to be like him, so badly.

"...You should probably give up." the doctor said dismissively. "Although you have powers, there is the chance they won't last. Plus, I doubt they'll be very useful for a Pro-hero's profession. It's best for your sake that you give up on that dream."

But I didn't give up. And my powers didn't just disappear. If anything, new ones showed. I learned that I could control the light my gem makes. Making it a beam or a scattered light. I can also make bubbles to put my things in. My room is full of them. It's neat!

As for other powers that came along, they're harder to control. Like I found out I have super strength...but it doesn't always work. I only did it once when I tried to lift a big rock that fell over some other kids' backpack. I was 7 at the time, and it weighted like it was made of air! I was just as shocked as the kid I helped out. When I tried a second time, no go. I spent the rest of the day trying to call it out, but never came. After that event, my super strength only showed up sporadically. But luckily in moments that was really, really a godsend. Like one time when Kacchan was being particularly violent against other kids.

Another power that only came when it suited it was some kind of resistance to damage. When I was walking in the woods with Kacchan and his friends, I tripped on a log over a big ravine and made a hard landing on the bottom. It was about six meters high and full of rocks. Yet I didn't even feel sore. Not a scratch. Too bad later, when Kacchan challenged me to a fight, I ended up bruised from head to toe.

I have the worst luck, sometimes.

Present Day.

"Wow, a new Pro!" Izuku Midoriya's white eyes sparkled at the image of the colossal woman. "And it's a GIANT WOMAN!"

Today, the white-haired, fourteen-year-oldboy was making his way to school when he got a news update on his iphone: a villain fight had broken out and Pro-heroes were trying to contain it. He ran there just in time to see a new Pro-hero making her debut; Mt. Lady.

After the dust settled, Izuku mumbled his own writings. "Quirk: Gigantification. She can increase her size to easily taller than a five-story building. I wonder what happens to her metabolism? Can she change her size to only that height?"

"You a hero fanboy?" a random civilian spoke to Izuku, luling his attention. "Lemme guess, you're aiming to be a Pro, too? Best of luck, kid!" the man gave him a thumbs-up.

"Thank you, sir!" Izuku smiled widely. That trademark smile, coupled with his big irises of color white which made his diamond pupils look very small in comparison, gave the boy a somewhat disturbing appearance. That made the man flinch a little.

People are always uncomfortable when I smile. I should come up with a new one...No way. All Might always smiles to show people that everything will be alright. I'll do the same.

Izuku arrived just in time for class. Not that he would have been greatly bothered if he missed it. Today, it was going at a snail's pace. He barely paid any attention to the teacher talking about the future of his students. The diamond-bearer much preferred to flip through his notebook of heroes.

At last, the man said something that caught his interest. "Now that you're all third-years, you need to think about your future. I'll pass you handouts, but..." the man made a flamboyant gesture. "I figured you're all going to the hero course!"

Everyone promptly showed off their quirk, except for Katsuki Bakugo. Izuku shrugged and joined in the fanfare. The jewel that was part of his being produced white lights like a miral ball. Not as strong the white-haired boy would have wished, but then again, when has Izuku had absolute control over his fickle powers?

The fanfare stopped when Bakugo smugly spoke out:

"You're all going to heroics, you extras. But you'll all be stuck at the bottom. I'm aiming for the top. I'll go to UA, and reach beyond All Might!"

The whispers of awe ran amok. In spite of his dismissive and mocking attitude towards everyone else, the whole class still respected and looked up to the explosive blond. Katsuki Bakugo never let any obstacles stand in his way. That was why, deep down, Izuku still looked up to him...

"Oh, right! Only you and Midoriya are aiming to be accepted in UA." the teacher reiterated as an after-thought.

Most of the class continued their criticism against Bakugou, regarding that tidbit of information as unimportant. Though Izuku did hear a few comments:

"He is? But what's his quirk, anyways?"

"I don't think he can even control it."

"Maybe they'll train him to him to headbutt villains. I hear he does that when he panics."

When you have a rock that is a part of you, weird eyes of white irises and diamond-shaped pupils, a load of naturally, dishevelled, white hair that always grows 5 points in different directions like a star, and a small collection of different powers, people automatically assume you have a quirk. But I don't have. Science says so, according to Dr. Tsubasa. I'm just different. Quirkless and different. And when I try to tell them I'm actually quirkless, they assume I'm either joking or self-conscious about my diamond.

After class was dismissed, Izuku picked up his notebook. He was looking forward to add the notes he wrote down about Mt. Lady's debut, this morning...

"Hey, Deku Diamond!" Bakugo Katsuki suddenly stomped his hand on his desk. 'Deku Diamond' was the insult that Kacchan branded him with for years. A useless diamond, that's what he was. "Listen up, you daydreaming nerd. I heard what the teach said. I'm the only one from this mediocre junior high-school who'll get the pleasure of applying for UA." he looked Izuku very close in the eye. "So be a good-for-nothing diamond and don't apply."

"Why not?" Izuku protested. "Sure I don't have a quirk as awesome as yours, but I can still be a hero."

Bakugo jeered. "As if! You think you can stand up to villains with your flashy light shows or head-butting them with that ass-fake jewelry on your head." he snapped said jewel, as if to prove it was fake. He subtly recoiled his fingers; that flick on the hard stone apparently hurt a little. He continued as if none of that happened. "Anyways, don't even try to apply, or else…"

He placed a smoking hand on Izuku's shoulder for effect. Izuku started panicking, and when he panics, he's got this reflex-like instinct to headbutt the danger away. Without warning, he was pushed back against a wall by an explosion.

"Thought I didn't see that coming, you freak?" Bakugo towered over him, a smirk wilder than anything Izuku could come up with. "You can't catch me off-guard again with those same old cheap tricks. So stay down where you belong, you weirdo."

I should mention that I once heabutted Kachan when we were little. I think it was the first time he looked really menacing to me. I tried to defend another kid against Kacchan, he got angry and attacked. Out of fear, I just headbutted him. He was out cold with a bleeding bruise. So I took him home. It was nothing serious, though. Even though I apologized, he wouldn't speak to me for more than a month.

Izuku walked home alone, as usual. He was never one for having many friends. His classmates often found him weird because, well, he was weird. Between his obcession over quirks, nerdy behavior, strange 'quirk' that he didn't seem to have a complete hang on and somewhat crazy appearance, Midoriya Izuku was kind of a loner.

While walking absentmindedly into a tunnel, he took a breath and slapped his cheeks.

"Okay. Nevermind what others say. I will become a hero. I can make things better."

"Hello there!" a gurgling voice snapped him out of his thoughts. Above was a dark green slime with eyes and a big, sinister smile.

"A vill-!" the slime rained down on Izuku. He found himself unable to move or breath. The villain had him and began forcing his way into the boy's mouth.

"Finally a meat sack I can use for a disguise. You're my hero, kid. Now stop struggling. This will only hurt for a while." the sludge looked greedily at his gem. "What's this? You got some jewelry on you. I'll be taking that when I didge your corpse."

"No, I don't wanna die like this! Not like this, please!"

Izuku's gem burst with light, filling the small tunnel in light. The villain shrieked. Izuku found himself able to breathe freely again. Exhaustion immediately took him away.

Izuku woke up to the feeling of soft but repetitive slaps on his face.

"Young man, are you alright?" his groggy eyes snapped open. He instantly recognized the iconic grin.

"ALL MIGHT!"

The mountain of a man, the legendary nº1 Pro-hero, laughed loudly. "That's right, my boy. There's no need for fear, for I AM HERE!"

The diamond boy entered a frenzy. First he thought he was still dreaming, or hallucinating. Then he frantically searched for his notebook for an autograph, only to verify the Pro had done it already. He had gracefully signed up his notebook.

"Ah! Think nothing of it." the hero spoke boisterously. "I'm so sorry you became involved in my pursuit of this villain. Though I was pleased to see you didn't require my help at all."

All Might lifted a glass bottle containing the green sludge. "When I got here, I saw a light going out. You and this misbehaving boy were both passed out on the tunnel. I take it that was your quirk." the man gave a short glance to the brilliant jewel on his forehead.

"Uh, actually…"

"Well, I must deliver this villain to the police. And I must say, with such a handy quirk, I'm sure you'd make a wonderful Pro, someday."

Izuku's attempt to clarify his 'quirk' died. His eyes shifted into the shape of five-pointed stars. That was his 'starry-eyed' look - whenever Izuku was exited about something or just very happy, his eyes became shaped like stars. "Sir, you're saying I can really be a hero? I've always wanted to be a hero like you. It's my dream to make everything better."

"Everything better?" All Might laughed. "My boy, wishing to make the world a better place is a noble cause. I wish you the best of luck."

"Even if I don't have hang on my powers?"

"Boy, nothing worth achieving is easy to get." All Might waved a finger. "Been a hero takes a lot of training, including on how to master your quirk."

Again was the misunderstanding, but it went completely ignored. He was being encouraged by All Might of all people!

Izuku bowed. "All Might, I promise I will work hard to control my powers to help people!"

Izuku ran home with a speed abnormal for someone with so little fitness. He left a faint trail of white light behind him. His face adorned by that wide grin and starry-eyed. So enthusiastic he felt that quick stop he had to make before home was almost forgotten.

"Oh, no! I forgot to pass by Mr. Moy's to pick up the bread." he slapped himself. Resigned, but not undetermined, he took off in another direction. After crossing a few streets, he reached his destination. A large, somewhat crowded bakery named 'Bingo-Bongo Sweets'.

Izuku made his way inside, passing by the other customers. He was here to pick up the bread his mom had phoned ahead for.

"So, how is our hero-to-be, today?" to his delight, he was attended by the owner of the bakery.

"Mr. Moy!" Izuku grinned from ear to ear. "I'm here for the bread."

"You got it." the man, Matthew Moy, was of american nationality and possessed a very youthful appearance for a grown-up. He moved to Japan six years ago and opened this successful bakery. The man had a curious mutation-type quirk that made his skin and hair pink. The oddest part were his earlobes; they were shaped like doughnuts, round and holed.

The pink man handed him a bag with the required bread, warm and releasing a pleasant smell of butter. To Izuku's surprise, he was also handed a small bag with foreign sweets. "These are for you and your mom. They're on the house, little diamond." Mr. Moy used the old nickname he gave Izuku. The man was an old acquaintance of him and Midoriya Inko, since they visited Bingo Bongo Sweets upon its debut. Matthew Moy was a good-natured person who got endeared to Izuku. Quickly the boy and mother became regular customers.

"Thank very much, Mr. Moy." the boy accepted, knowing that refusing would be impolite. "Oh, can you believe I met All Might, just now?"

"Really?" the pink man quirked an eyebrow. The man subtly ignored the other customers and paid close attention to Izuku's story.

"Well, little diamond, let no one tell you now that you can't be a hero. Bingo bongo!" the baker said his catchphrase, making pistol gestures with his hands.

Izuku made his signature creepy grin and departed.

Moy chuckled a tad nervously and went back to attending a client. A short, elderly woman walking with a cane. "Good morning, Shuzenji. What can I do for you?"

Once Izuku got home he blabbed the misadventure to his mother. Inko was understandably frightened, and then relieved.

"My light knocked out the sludge villain. I think I found a new power. Or maybe it's just my old one, but with a new capability."

"Oh, Izuku. I'm just glad you're safe and sound, son."

"It's alright, mom." he hugged to comfort her.

After doing a few chores he went for his room. The walls were decorated with hero posters, most of all were All Might's. Also other Pro-hero merchandise like his desk-lamp UA themed, or the Endeavour calendar, among others. The most interesting feature, however, were the many white, translucent bubbles floating about. Each one had one of his belongings. Izuku leaped and grasped the bubble with a large notebook inside and popped it.

Later, he wrote down the notes about Mt. Lady on the notebook of quirks. On his personal page was a summary of the powers he had discovered over the years.

My powers:

Lightshow: I can make my diamond shine, be it a beam of light or scattered. Easy enough to control. When I'm in danger, the light glows the brightest and stunned both me and the attacker. Verified by the attack of the sludge villain.

Bubble: The bubbles I make can float in midair and are perfect for storing stuff. Easy enough to control, too.

Super-strength: happens very rarely and not when I want it. I think it only activates when I'm in danger.

Super-endurance: resistance to physical damage. Also impossible to control. Apparently only activates when my life is on the line.

"This won't do. Not at all. I have to improve. I have to make myself better."

Izuku is genetically and officially quirkless, however everyone thinks he does have a quirk just by looking at him. How many quirkless people have a precious gem as part of their body, white eyes with strange pupils and freakishly white hair that always stands up in five prongs.

Because of that, people haven't ostracized him for being quirkless, but rather because he is a little weird. Also the cooler parts of his 'quirk' - the super strenght - are unreliable.